Metal-working machine



May 173', 1924. 1,493,542

- J. D. HIGGINS METAL. WORKING MACHINE original Filed sept. 2o. 1920 2 sheetis-sneet 2 Patented May 13, 1924.

UNTED STATES PATENT QFFlCE;

JOSEPH D. HIGGINS, OF GADSDEN, Alfil-MBAIIVIA.

METAL-WORKING MACHINE.

Application filed September 20, 1920, Serial No. 411,368. Renewed Uetober` 13, 1923.

T all whom t may concern.'

Be it known that I, Josnrrr D. HIGGINS, a citizen of the United States, residing at Gadsden, in the county of Etowah and State of: Alabama, have invented certain new and useful Improvements in' Metal-Working Machines, of which the following is a specification.

This invention relates to metal-working machinery and has special reference to means for upsetting the ends of bolts to form heads thereon, or to form collars or shoulders upon drill bits or other tools, or to punch metal plates. The invention seeks to provide ainachine of few parts by the use of which the desired results may be attained elfectually and easily.

The invention is illustrated in the accompanying (flrawings, in which Figure 1 is a perspective view of my iiny proved machine;

Fig. 2 is a vertical section thereof;

Fig. 3 is an enlarged detail section showing the manner of mounting the lower lever;

Figs. l and 5 are detail perspective views of holders which may be employed in connection with the clamps by which the work is secured in position;

Fig. 6 is a sectionof one forniy of chuck which may be employed;

Fig. 7 is a similar view of a chuck for use in punching metal plates;

Figs. 8 and 9 are detail views of additiona1 dies which may be employed in the chuck shown in Fig. 7

Fig. 10 is a section of a chuck which may be used in heading a bolt;

Fig. 11 is a horizontal section through the` clamping jaws. y I

In carrying out my invention, I employ a base or back plate 1 which is provided at its upper and lower ends with suitable openings through which fastening bolts or screws may be inserted to secure the back plate to a postor other fixed support, indicated at 2. At the upper end of the platel, I form lugs 3 which reinforce the plate and which are bridged at their lower ends by a hori-y zontal projection orl rib 4 which formsthe fixed member or jaw of a work-holding clamp, dowel pins 5 projecting frointhev said jaw to pass through suitable openings formed in the movable jaw 6 wherebytc support the said jaw and bring it into proper relation to the fixed jaw. Below the fixed clamping jaw 4: and spaced from the same is a second horizontal projection 7 which constitutes a guide for the chucks employed in different operations. This guide T as well as the jaw 1 and the lugs or braces 3 are integral with the back plate 1 so that the device may be cast at one operation and thus expeditiously produced at a low cost. The guide 7 is constructed with a central vertical opening 8 in which the Several chucks, one of which is shown at 9, are interchangeably slildably miounted. At the lower end of the back plate 1 and near the side edge thereof, I provide a fulcruin post or block 10 which is also integral with the block and has a notch or recess, indicated at 11, in its upper end. Extending across the said recess is a rib or bar 12 circular in cross section, as clearly shown in Fig. 3, and reinforced by a supporting plate 13 depending from the rib and merging into the bottoni of the block 10. The rib or bar 12 constitutes a fulcrum for a. presser lever lfwhich is adapted to be disposed parallel with the face of the back plate 1 and extend through the recess 11 of the block 10, as shown. `This lever 14 erably be constructed in two sections, the

working section beingv provided with a sock-v et 15 at its outer end to receive a handle member 16 which may be removed from `the lever when not in use so as to economize space and be out of the way as well as to increase the leverage when the lever is to be operated. The working end of the lever is the forni of a foot 17 having an eccentric or cam edge 18 adapted to bear against the lower end of a chuckmounted vertically in the guide `7, as clearly'shown.

Disposed between the bracing lugs 3 and pivotally engaged in said lugs is astirrup or .bail 19 which is adapted, when in use, to project forwardly beyond the clamping jaws, as shown clearly in Figs. .1` and 2. A locking lever 20 is provided and this lever has a working cam edge 21 adapted to bear against the outer face of the clamping jaw 6 when the lever is hung in the stirrup 19 by` engaging a notch 22 in the shoulder or apex of the stirrup, as shown. The said notch 22 isprovided in that edge of the lever remote from'the working c'am edge thereof so that the lever .may be readily engaged with or disengaged from the stirrup y ever, that the diameter of the work is less than the diameter of the registering grooves or openings 23 and in' order that such work may be treated, I provide a split holding sleeve 24 having an opening 25 extending centrally therethrough to receive the pin or other work. This sleeve will be engaged between the jaws 4 and 6, as shown clearly in Fig. 2, and will be found especially advantageous in 11p-setting the end of a bolt to form a head thereon inasmuch as the sleeve will be preferably provided at one end with a head plate 25 adapted to engage against the under edges of the clamping jaws and thereby furnish a substantial anvil against which the surplus metal may be compressed in the rip-setting operation. It may sometimes be desirable to provide a sleeve having a plate at both ends and such a sleeve is shown in Fig. 5 in which 27 designates the sleeve and 28 designates the head plates at the ends thereof. It will be noted that the plates and the sleeve are split so that they may be brought together around the work to encircle the same. The holder shown in Fig. 5 will be held against movement across the clamping jaws inasmuch as the plates at the opposite ends of the sleeve will engage the opposite edges of the jaws as will be readily understood.

In Figs. 1 and 2, I have illustrated the sleeve 24 in position within the jaws 4 and G and holding a pin 29 which is to be headed. In producing a head upon the pin, the holding sleeve with the pin therein is inserted between the clamping jaws, and the lever 20 then swung down from a vertical position above the jaws to the horizontal position shown in Figs. 1 and 2, the cam edge 21 being thereby brought to bear upon the -outer jaw 6 and force the same inwardly to the jaw 4 and about the sleeve 24 so that said sleeve will be very firmly clamped between the two jaws. The chuck 9 is a solid block, preferably of circular cross section, fitting snugly but slidably in the opening 8 of the guide 7, said opening being axially alined with the sleeve 24. In the upper end of the chuck is a recess or cavity 30 which will be given the shape which it is desired to impart to the head of the pin or bolt. The eccentric surface 18 of the leven 14 bears against the lower end of the chuck 9. so that when the said lever is rocked to the horizontal position, shown in Figs. 1 and 3, the chuck will be forced upwardly against the end of the pin or bolt 29 and will upset the same between the end of the chuck and the plate 26, as shown at 31.

The apparatus is used in the same manner to form a collar or shoulder upon a pin or bit at a point intermediate the ends thereof with the exception that the chuck, illustrated in Fig. 6, is employed instead of the chuck previously described. The said chuck 32 is a block of circular cross section but having a recess or socket 33 eX- tending from itsv upper end to a point appreciably removed therefrom, as clearly shown in Fig. 6. This elongated socket will accommodate the portion of the drill or bit beyond the shoulder and it will be understood that the shoulder or collar is to be formed of a separate piece of metal and tted about the pin, bolt, or other work before pressure is applied to the work through the chuck. The pressure exerted through the chuck upon the collar will compress the same so that its inner diameter will be decreased and, consequently, the collar will be shrunk onto the pin or other work in a very rapid and effectual manner.

If it be desired to punch holes in metal plates by the use of my invention, the chuck 34, shown in Fig. 7, is employed, this chuck having a socket in its upper end to receive a body 35 provided with a die or punch 36 at one end which will project above the end of the chuck when the die body is placed in the socket of the chuck. A plurality of the dies will be provided and they may be used interchangeably so that openings of any desired diameter may be formed, the bodies 35 of all the dies being of the same diameter so as to fit snugly within the socket of the chuck while the cutter will be of the diameter desired for the hole to be made, as indicated at 36, 37 and 38.

From the foregoing description, taken in connection with the accompanying drawings, it will be seen that I have provided a very simple machine in which a variety of metal-working operations may be very readily performed. The interchangeable parts may be very quickly and easily fitted to the base plate and the fixed parts formed thereon inasmuch as the clamping lever and the presser lever are readily detachable so that they do not interfere with the removal or insertion of any of the parts. To remove the locking lever, it is necessary merely to lift the working end thereof so that the notch 22 therein will clear the stirrup 19, and to remove the presser lever 14 it is necessary merely to rock the same upon its fulcrum or rest 12 so that the toe of the foot 17 will be lowered whereupon the lever may be lifted olf the said fulcrum and withdrawn from the notch 11, the chuck being held up out of contact with the lever' by the operator. The chuck will be very light so that no strain will be imposed upon the hand or fingers of the operator in holding the same out of engagement with the presser lever. When some operation is to be performed by the aid of the machine, the proper chuck is first inserted in the guide 7 through the bottom thereof, after which the lever 14 is brought into such a position that its foot or working end will pass through the notch 11 and between the fulcrum member or rest 12 and the lower end of the chuck. Vhen the lever has been thus advanced to such a point that the notch ,39 in its edge will engage the fulcrum or rest l2 the chuck may be released so that it will bear upon the end of the lever and be supported thereby. The facility with which the levers may be engaged with and disengaged from their respective fulcrums facilitates the packing of the machine for transportation and also expedites the setting up of the same at the place of use.

Having thus described the invention, what is claimed as new is:

l. In a metal-working machine, the combination of a base plate, a clamping jaw fixed thereon, a coacting clamping jaw, supports for the latter jaw projecting therethrough from the first-mentioned jaw, means for clamping the jaws about work, and means below the jaws for acting on the work.

2. In a metal-working machine, the combination of a base plate, a clamping jaw fixed thereon, a coacting jaw, a bail pivotally supported upon the base plate above the said jaws, a lever removably fulcrumed upon said bail and having a cam end adapted to bear against the second-mentioned jaw whereby to cause the jaws to clamp work, and means below the jaws for acting on work clamped between them.

3. In a metal-working machine, the combination of a base plate, a clamping jaw fixed thereon, a coacting jaw, a work-holding sleeve adapted to fit between the jaws and provided with a head plate to engage against the lower edges of the jaws, means for causing the jaws to clamp the said work holder and the work held therein, and means below the jaws for acting on the work.

4. In a metal-working machine, the combination of a base plate, means on the base plate for holding work, a guide below said work-holding means, a chuck slidable through said guide to act upon the work, and a lever supported upon the base plate for movement in a plane parallel with the face of the base plate below the guide and having a cam end bearing against the lower end of the chuck, said lever being freely removable.

5. In a metal-working machine, the combination of a base plate, means on the base plate for securing work, a guide below said work securing means, a chuck slidable throughI said guide, a fulcrum post projecting from the base plate below said guide and having a notch in its upper end, a fulcrum extending across said notch, anda presser lever provided in one edge with a recess to engage said fulcrum and provided at its opposite side with a cam bearing against the lower end of the chuck.

In testimony whereof I affix my signature.

JOSEPH D. HIGGINS. L. s] 

